DVD only, in a world where almost everything at least gets a Blu-ray release. That means the highest quality video possible is SD at most. That might have been expected two years ago during the Goseiger era, but everything since Gokaiger started has had a Blu-ray release at least.

Part of the June Sentai Returns Series. Shinkenger and Goseiger also had return videos. This one, like Shinkenger's, acts as a bonus adventure that takes place during the series, despite it being released after the TV series ends. Serves as a tide over before the series' true epilogue, in the following year's Versus movie.

He also has a pair of Enter sunglasses which he quickly hides when he notices the viewer watching.

He has a white pad/calculator. With both Enter and God, they press the final button before anything happens.

Parallel Hiromu and Youko crash on "Meeting Bridge" (It says so on the sign behind them).

Parallel Kuroki sports a Hitler mustache.

The animal discs are similar to the power-up discs for Mic Sounders in GaoGaoGar.

The robo comes out of pool in the same way Mazinkaiser does.

The control room for the animal mecha is a silly jungle themed thing. The control "panel" is just a stick that comes out of a ground, which they don't even use since the mecha reads their movements like a Kinect. Kuroki adds fruits and vegetables to the stick to do a mecha gattai.

The voice actors for the Buddyroids make live cameos in the parallel world.

The Doubutsu Sentai theme song is an obvious parody of the GaoRangers theme song, a fellow animal Sentai. The singer for both openings is Yamagata Yukio, who also happens to sing for the AkibaRangers theme songs which aired last year and this year.

Pink Cat's costume is the same as Pink Buster's from the real Go-Buster world. However, Pink Cat turns out to be Hiromu's sister in the parallel universe.

There are a lot of obvious parody to Sentai tropes in this special, that particularly reference corny 80s and 90s Sentai series.

During Go-Busters' airing, a Photoshopped picture appeared of Yellow Buster as Green Buster, designed to be a Miho's suit with Kerotan as her partner. Green Hippopotamus is similar, except it's a man and the animal is a frog, not a hippopotamus.

When Green Hippopotamus appears, Youko is impressed. That's because he's played by Usada's voice actor.

The events happen on December 31st, 2012, which some said would be the end of the world. They fight against Azazel who in some Christian myth is believed to be the symbol of the scapegoat/Satan which will bring about judgment, the removal of sin, and Revelations, AKA the end of the world. Go-Busters had to have one last Christian reference in there.

The Go-Busters die at 13:13 (1:13 in the afternoon) which is a doubly unlucky number.

Parallel Escape is Machine Empress Transi Stor (Transistor).

The monsters in the parallel world become big from Bikkuri Oil, probably taken from Bikkurium which did the same thing in Engine Sentai Go-Onger.

The events happen in the Hatake district. Hatake means "field", which is a hint at the animal theme that occurs during the middle act of the movie.